Sony registered a new camera in Asia. It has the code “WW119533” and 2,4GHx Wifi. Th Wifi capabilities suggest this is NOT a High End model. Maybe a new RX camera? RX10V?
By the way rumors saying the IMX521 sensor data got leaked today are quite off as we reported about that sensor back in July :) I have no clue if this is the sensor that will be used by the A7sIII. Anyway key specs are: